Lead Acid Battery Desulfator Reconditioner Regenerator for 12V–72V Batteries, Restore Extend Battery Life Works with AGM Gel VRLA SLA Flooded, Pulse Repair for Cars RVs Solar Marine Golf Carts

Worked like a charm!!! I took a chance because my battery was fine except when it was cold. I only had time to do it twice, but it really did the trick. Next morning it was 26 degrees and the car started just like in the summer, and it was fine ever since. I had been having to use a bump starter for weeks before this. It would start it the temp was around 40 or above.Having said all of this...if your battery has a short or dead cell, this won't work. Also, if it is too far gone it won't help. But rather than returning the product, why not keep it and use it on the good batteries that one has and extend the lives of those batteries?I find it discouraging that people pan a product or service when the product is used incorrectly or the service expected was far above what is realistic.Update a couple weeks later and still going strong. There have been several days of 10 or below and my car started great.Update 3 months later and things are still good.

Really works. 48v battery back up 6v interstate agms, sat uncharged 4years sulfated badly, one had shorted cells wouldn't charge over 2v. Not even a full week charging while desulfating and batteries are sitting over 6.3v n balanced. Did not expect these kind of results. Very impressive!

The unit brought my batteries for the golf art back to about 85% in a month and a half, i have used this since may and before using this i could drive from one end of the trailer to the other and it would not move again, after a month of using this i can make it around the whole campground or a good half hour, only reason for the 4 stars is the wires are to short to use on the golf cart, i opened up the unit and soldered longer leads on and used some dielectric grease and now this is a part that stays on the cart year round, i do take the ground off when we are not there for a couple of days

Did not work as needed. Returned for a Noco Genius

Not sure if it's the fault of this unit or the battery is just that far gone, but this didn't save my battery. 3 stars because it didn't work for me but perhaps nothing would have worked.

Purchased this in an attempt to recover my batteries rather than replace. Running the desulfator with charger. Periodically switching cycles 10-15 min on engine start no sulfator then swapping to boost or charge. 2 batteries are now fully recovered with no change in fluid. One has had a liquid desulfator added and fresh distilled water. Same treatment battery has been bad for 5 years. It still has a bad cell but most have been recovered I periodically stop check and change the cycle. I have hopes it was showing 0 dead. Bad battery on charger. Now it has a charge and showing signs of improvement.

I noticed chargers with built in desulfinators didn't always kick in so I ordered this lil bugger. So far I've used on semi functional motorcycle batteries, solar batteries, and an old tractor battery. I use it with a 1000/750 ma charger I got on here. I removed old acid, added new acid, and hooked the above mentioned combo up. I left it on for 4-5 days. The larger group 24 & 31 charged to 13.4v and rested at 12.8/9 and maintained that charge for a week before I installed them back into their systems. No issues or over work yet.

With the cost of batteries these days, I figured it was worth a shot to try this out to recover some capacity on some older sulfated batteries. I have had it for one day and I'm trying it out to see if it does them any good. I'll post back here and either raise or lower the star rating based on what happens. One little annoyance so far is that it beeps as the little light on it shows you that it's "pulsing". I think everyone could do without the beeping since it needs to be hooked up for multiple hours. The little flashing indicator light is enough.Updated... I haven't noticed any improvement on the batteries that I used this on. I don't think it's actually doing anything except beeping nonstop. It does modulate the voltage pulses going into the battery but it isn't improving the battery state. Just my experience. If it worked for you then great.Also, just below this comment block on Amazon, the device is listed as toy and asks if it was suitable for my age. Sure, it was a suitable toy for my age. It kept me occupied for far too long.